Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
SAG Mill Liner Sets
A complete SAG mill lining system, with shell, head, grate and discharge parts designed as a coordinated system.
SAG Mill Liner Sets— a complete SAG mill wear lining system. Each set is coordinated as a whole: shell liners, head liners, grates, pulp lifters and discharge parts are matched to the mill model, ore characteristics and operating parameters.
Liner Set Bill of Materials
| # | Part / Assembly | Material Grade | Function |
|---|---|---|---|
| 1 | Shell Liners | Mn18Cr2 / Cr-Mo alloy steel | Protects the mill shell from impact and abrasion |
| 2 | Lifter Bar | Mn18Cr2 / Mn22Cr2 | Controls charge lift and trajectory, with a profile selected for the required charge motion |
| 3 | End Liner | Mn13Cr2 / Mn18Cr2 | Protects feed and discharge heads from wear |
| 4 | Discharge Grate | Cr-Mo alloy steel | Controls slurry discharge, with aperture design selected for the ore |
| 5 | Pulp Lifters | Cr-Mo alloy steel | Transfers slurry from the discharge grates to the discharge trunnion |
| 6 | Filler Blocks / Packing Blocks | Cr-Mo alloy steel | Retains liners and distributes preload |
| 7 | Discharge Cone | Mn13Cr2 | Directs slurry towards the discharge outlet |
| 8 | Bolt Assemblies | 42CrMo4 | Fastens liners to the shell, with flanges, washers and seals |
Applications and Scope
A complete SAG mill lining system, with shell, head, grate and discharge parts designed as a coordinated system.
Basis for Material Selection
- Select materials for impact loading, abrasion, temperature, corrosion and feed characteristics.
- Assess chemical composition, heat treatment, hardness and mechanical properties together.
- Maintain toughness, fatigue strength and dimensional stability. Hardness alone does not ensure service life.
- Evaluate upgrades using wear measurements, failure modes and total tonnage processed.
Information Required for an Inquiry
OEM and mill model; shell internal diameter and length; current liner profile; ore type, feed size, moisture and slurry density; target throughput and service life; failure photographs and wear measurements.
Material information supports preliminary engineering selection. Final composition, heat treatment, hardness, dimensions and tolerances must follow the approved drawings and technical agreement.